Overseaming-machine.



S. I I. N. SOLY.

I OVERSEAMING MACHINE. APPLICATION FILED PEB. z3, 1904. RBNEWED SEPT.18,1911.

` 1,043,161. Patented'N0v.5,1912.

3 SHEETS-SHEET 1.

Im I v WitnessesR; 53

S. L I. N. SOLY.

OVERSBAMING MACHINE. APPLIOATION FILED FBB.23, 1904. RENEWBD SEPT.18,1911.

LOB.. Patented Now/15, 1912.

SHEETS-SHEET -2.

Witnesses:

Attorneys S. L I. N. SOLY.

OVERSBAMING MACHINE. v APPLICATION FILED 11:12.23, 1904. 111111111111111SEPT. 1a, 1911.

LOQSJL Patented Nov.5,1912.

3 SHEETS-SHEET 3.

. WSA

3665;); $02 n Vlnventorg jveejf/galy,

Attorneys UNITED sTATEs PATENT OFFICE,

sAJaINsOLY AND NAPOLEON soLY, oF MONTREAL, QUEBEC, OANADA,

i 'AssIGNoBs To SAID IL ENEE NAPOLEON SOLY.

OVEBSEAMING-MACHINE.

Specication of Letters Patent.

Patented Nev. 5, 1912.

Application led February 23, 1204, Serial No. 194,677. Renewed September18, 1911. Serial No. 849,820.

To allnwhom it may concern:

Be it lrnown that we, SABIN .SOLY and IiinNnn NAPOLEON SOLY, both of thecity of Montreal, Province of Quebec, Canada, have invented certain newand -useful Improvements in Overseaming-Machinesg and we do herebydeclare that the following is a full, clear, and exact description ofthe same.

Our invention relates to sewin machines, and especially to the classused or the purpose o sewing fur.

The object of the invention is to Jrovide simple and .durable mechanismfor orming a 'seam with a single thread, and mechanism consisting of aseries of initial operative members the constituent members whereof areefectuallyA prevented from correlative displacement. Y

A further object of the invention is to'` enable parts for operatin thelooper to act thereon as near as possi le in a direct' line with theaxis thereofl thus utilizing 'the' maximumpower of the Operating part inthe direct operation of the looper with mnimum .loss in side load.

- The invention consists ofa pair of single leader cams and aneccentricall madefrom asingle piece ofV metal and in a homogenousmass,each member of this group merging 1n that next te it.- t y 'Afurther feature. of the inventionb consists of an oscillating crankeffecting an op- .erative connection between' the connecting rod leadingfrom the eccentric for reciprocating the looper, and the looper bearing,a further feature consisting of a universal ball joint forming a part ofthe Operative connection between the pair of coacting single leader camsfor oscillating the looper, and

the loo er bar.

Anot er and an important featureof the invention consists in aparticular construction and arrangement ofparts vwhich secures a forwardmovement of the cams and consequently the action thereof upon theirfollowers, vat a point between the centers of rotation `of thecams andthe fulcrums of the followers.

` Figurel is a longitudinal vertical section of a machine constructedaccordin to my invention. Fig. ,2 is a plan, certain parts being brokenaway, as will appear, the cover of the machine. being represented asremoved. Fig. Sis a vertical section supposed to have been takensubstantially on the line 3-3 of Fig. 2,- certain sented as broken away.Fig. 4 is a section supposed to have been taken substantially on theline 4 4 of Fig. 2. Fig. 5 isa vertical section supposed to-have beentaken substantially on 'the line 5 5 of Fig. 2. Fig. 6

partsf being repreis a side ,elevation of a fork, which coperates with acam in connection with the looper movement'. Fig. 7 is a rear elevationof the fork shown in Fig. 6. Fi 8 is a. horizontal section takensubstantial y on th'e h ne 8-8 of Fig. 1. Fig. 9 is a. vertical sectionsupposed to have been taken substantially on the line 9-9 of Fig. 8,this vie'w being upon en enlarged scale, as will appear. F g. 10 1s aperspective representing a dog, which is used in connection with thelfeed mechanism this view is upon an enlarged scale. Figs. 11,'12, 13,14 and 15 represeiitthe looper and needlein progressive stages,coperating to sew a seam.

Throughout the drawing and speciiication, the same'numeralsxof referencedenote like'partS. Y Referring more particularly to the parts,

1 represents the casing of a machine, which comprises la substantiallyrectangular or box-like base 2 adapted t0 beset upon a table or similarsupport, as will be readily understood; this base is 'provided'forwardlywith a foot' '3, under which is formed a pocket 4 containing certainfeed mechanism, which will be described more fully hereinafter. Thecasing 1 comprises also an iipper section or body 5, which is attachedrigidly to the upper face of the base 2, as indicated at 6, and thisbody 5 is surmounted by a 'suitable cover 7 carrying certain parts,

indicated, and this needle-bar is adapted to be reci rocated throughvthe medium of a fork 13 'W ich is rigidly attached thereto, as shown,and which receives the e entric, as

l, izontal plane, and having toothed eries 18 intermeshing at 'a point19 just eshown. This needle-bar is rovided forwardly with a head 14,whic is provided with means near its lower portion for attaching aneedle 15, the said needle being disposed. longitudinally with respectto the neath the pat-h of the needle-point. The feed-wheel 17 is rigidlyattached the upper extremity of a spindle 20, which sp1ndle is rotatablymounted near its upper ex-Y.

tremity in a bracket-arm 21, which extends from the base 2, as shown. Asthe needle is reciprocated by the needle-bar 11, the spindle 20 isintermittently advanced in such a manner as to feed the seam being sewedat the point 19, the same passino' between the intermeshing peripheriesofa the feed-wheels, it being understood that the feed-wheel 16 ismaintained in contact with the feed-wheel 17 b mechanism which will bedescribed lmore ully hereinafter.

For the purpose of actuating the feeds indle 20, the aforesaid shaft 8is provided with the aforesaid feed-cam 10, which cam has preferablysubstantially the outline shown in Fig. 1, the same coperating with afeed-fork 22. This feed-fork is supported pivotally upon a link 23,being attached at the upper extremity of said link, the lower extremityof -said link being pivotally attached at 24 to an arm 25 of anadjusting bell-crank lever 26. This adjusting lever is pivotallyattached at 27 to the side wall of the base 2, as shown. The saidbell-crank lever 26 is further provided with a wing 28 carrying athreaded'stud 29, which stud projects through a curved slot 30 in thewall of the base, and carries a thumb-nut 31, as shown, the saidthumb-nut affording means for locking the adjusting lever 26 in anyposition desired. Evidently, by fastening the adjusting lever indifferent positions, the fulcrum of the fork will be more or lesselevated, in this manner effecting the throw-or amplitude of movement ofthe lower extremity 32 of the fork. This lower extremity 32 is pivotallyattached to an` arm of the bell-crank lever 33, the same. being integralwith an arbor 34, the extremities of which are pivotally mounted upongeons 35, as indicated most clearly in ig. 3. To the other arm of thebell-crank le ver f33, a feed-rod 36 is pivotally attached,

`which feed-rod passes forwardly into the at its ex-` pocket 4, andattaches pivotally tremity to a feed-plate 37. This feedlate 37 isloosely mounted upon the hub o the feed-disk 38, the same being mountedsubstantially centrally in the aforesaid pocket 4 and having a.peripheral flange 39 projecting upwardly, as shown. Upon the flange 39dogs 40 are received, the same consisting of short blocks having taperedinner extremities 4l and notches 42, which receive the said iiange orrim, as indicated most clearly in Figs. 1 and 9. -As shown, the dogs 40dpr'oject substantially radially inwardly an their inner extremities areengaged b shoulders 43, which shoulders are forme at the hub of thefeed-platel 37; as indicated, there are preferably two o f these dogs 40placed oppositely, as shown. It being understood that the notches 42 itsnugly upon the rim 39, it will be evident that if a rotation of theplate 37 occurred in the direction of the arrow indicated in the fulllines in Fig. 8, the shoulders 43 would tend to rotate the said dogs 40upon their` notches, in this manner causing them to bind upon the rim sothat the movement ofl the feed-plate would 4loe imparted to thefeed-disk. When the return movement of the feed-plate 37 takes place inthe direct-ion of the arrow indicated in the dotted lines adjacentthereto, the do s 40 are moved backwardly upon the rlm 39 by smalllsprings 44, the inner portions of which consist of coils 45 attached tothe under face of the feed-plate 37, as shown. From the coils 45, thebodies of these springs 44 ex'- tend in the direction of the notches 42of the dogs 40, and near their extremities are formed with lateralextensions 46, which press against the vertical faces of the dogs lnearthe notches, as shown; and beyond the extensions 46, the springsterminate in extensions 47, which lie upon the upper faces of the do andslightly constrain the same downwar ly. From this arrangement of thesprings, it is evident that the force which returns the dogs 40 afterthey -have had an advance movement presses upon the dogs very near thenotches so that this force has little or no tendency to produce arotation of the dogs; hence, there can be no binding action whatever inreturning them, and cons uently, the wear upon the faces of the notc esis inappreciable. Such an arrangement as this is considered highlyadvanta eous, for the reason that where the dogs avebecome sllghtly worntheir efficiency is much diminished.

In order to prevent a Aretrogressive movement of the feed-disk 38, adetent dog 48 is employed, the same consisting of an elongated blockhaving a notch 49 in the under edge thereof, which notch is adapted vtobe applied to the rim 39 like the notches 42 of the dogs 40. This detentdog is very clearly shown in Fig. 10, and its manner of application tothe feed-disk is clea'rly shown in Fig. 8; it,has, a rounded nose 50 atits outer extremity, which abuts` against a part of the side wall of thepocket 4, as indicated; near the notch 49, the extremity of a spring 50lpresses 'the dog in a rearwardly direction with respect to the directionof rotation, the said spring comprising a coil 51 disposed `about a studwithin the pocket 4, as shown. The feed-disk 38 is rigidly attached totheI spindle by means of 'a key-plate 52, the same lhaving an integralkey 53 for thls purpose, and lattaching to the extremity of the spindleby means of. a screw 54. It'l should be stated at this point' that theoperation of the feed-disk 38 with respect. to the thepocket 4 isprovidedl with a downwardlyv projecting li 55, which constitutes aneiii- 'cient shield or the purpose mentioned. 1

The feed-wheel 16 is rotatably. carried upon a vertical extension 57formed atj the extremity of a presser-bar 58, which presserbar has adownwardly disposed extension 59 passing under the said feed-disk, asshown.

The body of this bar 58 is dis l osed substantially parallel with -thenee le-bar 11, theV same having a flattened portion 59 passing throughan opening or notch 60 formed in the forward wall of the body 5. Thesaid presser-bar is held in this notch by means pf a plate 61, disposedas shown mostclearly 1n Figs. 2 and 5. Except for the -portlon 59referred to, the bar 58 1s preferably of round form, as shown. Its innerportion, which lies within the casing, is surrounded by a helical spring62, which thrusts against a transverse pin 63, so as to constrain thefeedwheel 16 against the feed-wheel 17, as will be readily understood;for the purpose of enablingv the feed-wheel 16 to be moved away from thefeed-wheel 17 to facilitate the insertion of the seam to be Vsewed, theinner .extremity of the feed-bar 58 is pivotally attached to anarm 64,which arm is rigidly carried by an arbor 65, the said arbor havn.ing'another V'arm 66, which projects rearwardly through an opening inthe casing and is provided at 67 withhfacilities for attaching altreadle link or similar' operating means. From this arrangement, itshould be understood that by forcing the arm 66 upwardly, the arm 64would be forced for.- wardly, so as to compress the sprmg 62 anddisplace the wheel 16'in a forward direction.

To the extremity of the aforesaid extension 57, just above the face'ofthe feed-wheel 16 there is rigidly attached a needle-.plate 68 having agroove 69 in the upper face thereof, constitutin a guide for the needle15, as will be readily understood, and just above the needle-plate 68there is attached a looper-plate 70 having an edge 71 disposed towardthe point 19, which edge facilitates the formation of 'the loop, in amanner which will be described more fully hereinafter. f

Directly above the needle-bar 11, a looperbar 72 is mounted, the samecomprising a head 73 rigidly attached toa stem 74, whichstem 1slongitudinally slidable in a rocker guide 75, the said guidebeing-supported upon the sidewalls of the body 5 through the medium ofgudgeons 76. VBehind the head 73, the said stem carries in rotaryrelation therewith a sleeve 77 comprising a capl 78, as shown, vwhichcap coperates with the".

said sleeve to form a bearing for a crankpin 79, the said pin being madeintegral w1thl the arms of a crank 80, as shown; as

indicated most clearly in Fig. 5, this crank is supported lat the leftupon a gudgeon 81, and at the right upon a gudgeon 82, that extremitywhich coperates lwith the gud- Upon this shank 83, an arm 84 is attachedrigidly, aset-screw 85, and a through-pin 86 being used in thisconnection. This arm 84 is `for the purpose of enabling the crank 80 tobe rocked to and fro; for this reason, the arm 84 is connected pivotallywith an eccentric-rod 87, the lower extremity whereof attaches-toaneccentric 88, which includes an eccentric sheave, the same beingrigidly carried` by the aforesaid shaft 8. From this arrangement, whenthe shaft 8 rotates, the eccentric-rod 87 operates to rock the crank 80to and fro, which has the effect of giving the looper-bar areciprocating movement; when this movement is taking place, it will, ofcourse, be understood that the forward portion of the looper-bar risesand falls to a small extent, this movement being permitted by reasonofthe pivotal bearing of the guide 75.

lIn addition to the .longitudinal recipro-I' geen 82 comprising anelongated shank 83.

hereinafter. To this end, the stein 74 carriesrigidly a vrocking-sleeve89, the same having a transversely disposed head 90 in which isrotatably mounted a pin 91, and thls pin has 4a bifurcated extremityv92, inl

which is pivotally attached the upper extremity of a rod 93; this rod isactuated by a fork 94 having an integral pivotally mounted arbor 95; thesaid fork having an extension 96 acilitating the attachment of the saidarm 9 'ndicated The fork 94 is peculiarly constructed, inasmuch as thetines 97 and 98 thereof are oit-set laterally with respect to eachother, and these tines coperate respectively with cams 99 and 100 castin onepiece and secured to shaft 8 by means of a hub 101. In thisconnection, it

should be understood that the camA 99 operates to elevate the fork, andthe cam 100 operates to move the same downwardly, and

the saidcams are so designed with relation to each other that they arealwaysv in contact with their respective tines, from which arrangementthere is never any slack or lost motion at this oint.A Suchanarrangement .A

as this is consldered highly advantageous, for the reason that it doesaway with the necessity for springs, which are sometimes employed inconnection with cams to maintain the actuated member in contact with.

i the looper-bar will be reciprocatedthereabove; however, thereciprocation of the looper-bar will be a compound one involving areciprocation upon its own axis.,

In the forward extremity of the head 73 ofl the louper-bar, aylooper-finger 102 is attached, the same being preferablyofsubstantiallythe form shown, curving downwardly -so that its extremity lies normally.

adjacent to the path of the needle 15, as indicated most clearly inFig. 1. Thislinger is provided at its .extremity with a point' 103,which projects laterally, as shown, and opposite to this point there isa heel or nib 104. In Fig. 11, this finger 102 is represented 'as havingcaught a loop 105 formed-v near the needle-point holdingthesame'preparatory to having the needlepass therethrough, the said loopbeing caught over the point 103, and passing under the heel or nib 104.The needle passes close to the nib 104, as indicated in Fig. 11. In Fig.12, the stitch is represented in a more advanced stage, the looperhaving passed away from the needle and upwardly, so as to disengage itfrom the loop. In Fig. 13 the needle is represented just in the act offorming the loop, which is made'at the looping-edge 71; after catchingthe loop over the loopingpoint- 103, the looper-bar moves rearwardly atthe same time that theinger moves upwardly, so that as the needle iswithdrawn from the seam, the finger draws the loop (which it catchesbeyond the seam)- toward the front of the seam, and it isthenimmediately moved into a depressed position,

-such as shown in Fig 11 toallow the needle In connectionto pass throughthe loop. with these Figs. 11 to 15, 106 represents the seam, 107represents the ,thread which is forming the seam. It should beunderstood that the arm 84 will be set at a very accurately adjustedangle, in order to facilitate 'the nice ccperation of the looper-inger55 with the needle. In practice the correct osition and adjustment wouldbe obtained y means of the said screw 85, and after the proper ositionhas beenobtained, the pin `86 woul be inserted, permanently the parts intheir best relation. Y

Uponthe cover 7, a spool 108 is mounted, and the thread passingtherefrom passes around a guide-stud 109, and then around a portion ofthe periphery of a 'tension-pulley 110, thence passingthrough aguide-eye 111, and around a needle-bar guide 112 and thence tothe end ofthe needle, which is located, as shown, near the point of the same. AThemachine may be continuously driven by means -of a belt-pulley 113, andthe shaft 8 may carry, at another point, a balance-wheel 114 adapted tomake the rotation of the machine uniform. Y

In\operation, yit should be understood that the pieces to 'be unitedwouldfbe superposed and fed ho-rizontally between the feed-wheels -16andI 17, so that the alining edges would project slightly above theedges of the feedwheels, as will be readily understood. A gulde 16,which consists of a curved finger terminating at the point 19 isVarranged for the purpose of assisting theguiding of the material. I l

The main advantages of an overseaming machine constructed according tothe foregoing are as follows :-Owing to the'looper from the crank pinofits operating crank bar being located-beneath and suspended shaft, suchlooper-bar is brought more closely to the level of the: needle, thuse11- abling a shorter'looper finger to be used with lessf verticalmotion.to perform its function, and consequently less s ring of thelooper-bar and finger and less ost motion.

The effect of this is that the looper finger can. lbe adjusted to' workcloser to the needle and finer and more. uniform work is produced.

Owing. to the particular relativenrrange- .ment of the `cams and theircoperative parts, our improved machine in runnlng causes the cams, whenimparting stitch forming motions to the stitch forminginstrumentalities, to act upon the portions of the forks between 'thecenters of rotation of the cams and the fulcrumpoints ofthe forks, withthe result that the power of the 4cams is applied to the-instrumentalities more directly than heretofore while there is lessspring (and, consequently, lost motion) between the cams and forks. Afur- .ther advantage is that the group of the loo er operating parts(the two single lea er cams and eccentric) are made positively andinvariably coperative. Heretofore these parts (or such of themas havebeen utilized) have-been secured independently of one another to theircarrying shaft. 1

Usually the eccentric, one single-leader cam, and a spring coacting withthe cam have performed, imperfectly, the functions ,of our group ofoperativeparts, and the eccentric and cam have frequently after havingbeen set (in the assembling of the machine), shifted their relativeangular 4position, which, of course', resulted in the reakage of eitherthe needle or the4 looper finger.f

We obviate any chance of this breakage by casting all the looperactuating parts (the two single-leader cams and the eccentric) in onepiece.

Our particular arrangement'of the cams and their followers which causesthe cams to actup'on the portions of the followers near-. est to theparts to which the followers are operatively connected, is asfollowsrf-The rotation of the cam shaft 8 is forward. That is to say,the top of the shaft travels toward the front of the machine. Theresultant operative movement of the eccentric 9 and cam 10 `(Fig. 1)land eccentric' 88, and cams 99 and 100 (Fi 4) is such that each of theeccentrics andg cams exert their power, when causing theinstrumentalities to perform their functions, upon the portions of theirparticular followers nearest to the instrumentalities they operate. Theparticular relative angular positions of these eccentrics and cams vareas shown in Figs. 1 and 4 both of which depict the cam shaft 8 in thesame position in relation to the operation of the machine. By referringto Fig. l it will be observed that the eccentric 9, in the performanceof its function of inserting the needle into the work, acts u on,

the portion of the forward tine of the ork 13, nearest to the crotch ofsuch fork, and it bears upon the outer end of the rear tine only towithdraw the needle from the work. The same action is effected by feedcam 10 upon fork 22, by eccentric 88 upon rod 87,

and by cams 99 and 100 upon the'tines 97 and 98 of fork 94 coacting withthe eccentric 88 in the operation of the looper. We would particularlypoint out here that the relative angular positions of the cams 99- and100 and the 1 eccentric 88 constitute an important feature of thisinvention. By means of this particular arrangement each member of thegroup exerts its power stroke upon its follower in a way toobviate anychance of the latter springing (as would occur if the power stroke wereexerted upon the ends of the tines) and consequently theV partsinterfering and being broken as heretofore pointed out.

In all sewing machines the needle bar, or carrier, is^in great need oftrue and comparatively powerful actuation owing to the fragile nature ofthe needle and its work in perforatingvthe stock being stitched. Our

particular arrangement ofthe eccentric 9 I and-the fact of its bearingas close as possible to the true axial plane of the needle bar insuresthe required true action and at the same time (as is the case with allthe cams and the other eccentric of our machine) applies the energy ofthe eccentric with the least loss, to the needle bar.

' While I-have shown in the accompanying drawings the preferred form ofmy invention, it will be understood that I do not limit myself to theprecise form shown, for many ofthe details may be changed inform orposition without affecting the operativeness or utility of my invention,and I therefore reservethe right to make all such modifications as ,areincluded within the scope of the following claims, Vor of mechanicalequivalents tothe structures set forth.

Having described my invention what lI 'claim and desire to secure byLetters-Patent, isz;

l. In a sewing machlne the combination with a straight needle and alooper coacting therewith, of a crank shaft with its -crank pin disposedabove the axis of the crank shaft, means operatively connected directlyto the. crank-shaft for oscillating the same and through it `suolilooper longitudinally to the needle, a looper ybar located with its axisat/right angles to and intersecting the axis of the crank shaft when thecrank is in its uppermost position, ,a sleeve mounted upon the bar, acap secured uponV the sleeve and together therewith inclosing the crankpin, and means 'whereby the looper is connected to thelooper bar. y

2.. In an overseaming machine, looper mechanismcomprising a pair ofupwardly vprojecting arms 80 connected rigidly together near their upperends by a crank pin 79, one arm having a laterally projecting ,elongatedshank near its lower end, and the end of theshank and the other armhaving a pair of sockets in axial alinement, a pair of gudgeons carriedby stationary parts of the machine and engaging the said sockets, alooper bar, a member located between the lower ends-of the said arms 80and hung from the said crank pin the said member being adapted tosupport the bar, means for oscillating the said shank, and a looperfinger carried by one end of the said bar.

In witness whereof we have hereunto set our hands in the presence ofytwo witnesses.

SABIN SOLY.

IRENEE NAPOLEON SOLY. Witnesses:

J. A. MARION, IED. PAGE.

sol

